Phase-matching-free parametric oscillators based on two-dimensional semiconductors

Alessandro Ciattoni; Andrea Marini; Carlo Rizza; Claudio Conti

doi:10.1038/s41377-018-0011-3

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Phase-matching-free parametric oscillators based on two-dimensional semiconductors

Original Articles

- Phase-matching-free parametric oscillators based on two-dimensional semiconductors
- Phase-matching-free parametric oscillators based on two-dimensional semiconductors
- LSA 2018年7卷第4期页码：32-40
- Affiliations：
  
  1.Consiglio Nazionale Delle Ricerche (CNR-SPIN), Via Vetoio 10, 67100 L'Aquila, Italy
  2.Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio 10, 67100 L'Aquila, Italy
  3.Institute for Complex Systems (ISC-CNR), Via dei Taurini 19, 00185 Rome, Italy
  4.ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
  5.Department of Industrial and Information Engineering and Economics, University of L'Aquila, Via G. Gronchi 18, I-67100 L'Aquila, Italy
  6.Department of Physics, University Sapienza, Piazzale Aldo Moro 5, 00185 Rome, Italy
- Author bio：
  
  Alessandro Ciattoni (alessandro.ciattoni@spin.cnr.it)
- Funds：
- DOI：10.1038/s41377-018-0011-3
  中图分类号：
- 纸质出版日期：2018，
  
  网络出版日期：2018-05-18，
  
  收稿日期：2017-07-28，
  
  修回日期：2018-01-31，
  
  录用日期：2018-02-05
- Accepted：
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Phase-matching-free parametric oscillators based on two-dimensional semiconductors[J]. LSA, 2018,7(4):32-40.

Ciattoni, A. et al. Phase-matching-free parametric oscillators based on two-dimensional semiconductors. Light: Science & Applications, 7, 32-40 (2018).
Phase-matching-free parametric oscillators based on two-dimensional semiconductors[J]. LSA, 2018,7(4):32-40. DOI： 10.1038/s41377-018-0011-3.

Ciattoni, A. et al. Phase-matching-free parametric oscillators based on two-dimensional semiconductors. Light: Science & Applications, 7, 32-40 (2018). DOI： 10.1038/s41377-018-0011-3.

摘要

Abstract

Optical parametric oscillators are widely used as pulsed and continuous-wave tunable sources for innumerable applications

such as quantum technologies

imaging

and biophysics. A key drawback is material dispersion

which imposes a phase-matching condition that generally entails a complex design and setup

thus hindering tunability and miniaturization. Here we show that the burden of phase-matching is surprisingly absent in parametric micro-resonators utilizing mono-layer transition-metal dichalcogenides as quadratic nonlinear materials. By the exact solution of nonlinear Maxwell equations and first-principle calculations of the semiconductor nonlinear response

we devise a novel kind of phase-matching-free miniaturized parametric oscillator operating at conventional pump intensities. We find that different two-dimensional semiconductors yield degenerate and non-degenerate emission at various spectral regions due to doubly resonant mode excitation

which can be tuned by varying the incidence angle of the external pump laser. In addition

we show that high-frequency electrical modulation can be achieved by doping via electrical gating

which can be used to efficiently shift the threshold for parametric oscillation. Our results pave the way for the realization of novel ultra-fast tunable micron-sized sources of entangled photons—a key device underpinning any quantum protocol. Highly miniaturized optical parametric oscillators may also be employed in lab-on-chip technologies for biophysics

detection of environmental pollution and security.

关键词

Keywords

references

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